Dark matter “clumps” have been found by making use of Einstein’s general theory of relativity

Astronomers have used a principle first proposed by Albert Einstein over 100 years ago to map the distribution of dark matter in unprecedented detail. The team’s method revealed the presence of “clumps” of dark matter between galaxies, showing how this mysterious substance is distributed on smaller scales.

Fluctuations in the observed dark matter, identified between a distant quasar (or a bright light source powered by a feeding supermassive black hole) and a galaxy located between that quasar and Earth, could help constrain the matter’s elusive properties.

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